Rotary siphon device for steam drums



4, 1929. H. R. RITCHIE 1,715,677

ROTARY SIPHON DEVICE FOR STEAM DRUMS l Filed Aug. 31, 1928 INVENTOR- By*7 %&e

25 7 ATTORNEYS.

Patented June 4, 19 29.

onirso stares.

P TEBZ rriorz.

' HARRY'R. RITCHIE, or SPRINGFIELD, rassaoi-rosnrrs, nssienon To wrn'on1 BRooigino, or PALMER, MASSACHUSETTS, A GORPQRATIONI ormAssaeiInsrirrs- V ROTARY SIPZ-ION DEVICE FOR STEAM DRUMS.

Application filed August 31, 1923. Serial nqflaoaass.

In the use of drums which are heated by means of steam circulatedthroughout their 7 interior it is necessary to drain from the in- 15.drum is constructed with tie rods joinin'g its ends or with any otherinechanical obstruc} tion it is impossible to use a stationary pipe asthe tie rods or the obstruction; would strike side ofthe drum the waterwhich is formed by the Condensation oi steam. Entertain 1nstallations itis possible to usea straight sta tionary pipe entering the drum. througha stuihng box in one end and extending to a point adjacent the low-estportion ofthe. drum.. The pr-essu're'of the steam within the drumv willblow. out through this pipe any water orcondensation, I With other typesof drum construction, however, this simple expedient is not available.For example, ifth-e thispipe-during the rotation ofthe drum. It

isthe object of my invention to provide a sim- ,Fig. 1 isa verticalsection taken alongjthe axis of a drum equipped with my mproved drainagedevice ;-and v V Fig. 2 is a cross The drum 10 may be formed in anyusual or desiredfmanneretor example, of a sheetoifmetal having its edgesbutt-welded together "and joined at its-ends to end plates 11. The

end plates are joined by bolts 12 with the hub portions 13 of a drumsupportingsha it let preferably extending from one end ofthe drum to theother; Outer hub portions 15 are I also secured byrthe bolts 12 and are'fitted to ride in roller bearings 16 suitably supported upon pedestals17. This type of drum'eonstructioi is conventional only and in its de- Itails does not form a part ofiny invention. One end of the shaft 14 andthe hub 15 are provided with an axially extending recesslS. .At itsopen} end the hub 15 is provided wit-hfa "sleeve'22 extending inwardlythrough the recess. The flange 20 is preferably attached to the gland bybolts 23 and a suitable. paoling24. J i

' A,plurality of pipes 2 5, hereshown as three in number, are spacedfroin each other both circumferentiahy of the sleeveand in dis 'ectionthereof on line I ternal Construction such asti'erods.

rection along its axis. The pipes extend radi'ally outwardly fromthe,sleevefthroughr holes io'rined in theshaft. 14 and haveytheir outeropen ends terminating closely adj acent the inner SHlfEIOG OZE the'd'rum10. The inner ends of the pipes open into theinterior of the sleevethrough holes formedin the latter, As

a-convenient nethod of construction thepipes are simply threaded intotapped holes formed in thesleeve. f Y

Extending within thesleeve and preferably fitted thereto with a. runningfit inorder to; i V

eliminate steam leakage between them is a 1 v valvetube 26. At points inline with themthe valve tube, as wasthe case with the pipes 25, theseports arein alignment witheach;

other in a direction alongthe axis and new catednt the lowermost portionof the valve ztube'in spaced positions horizontally; The.

ports may be simple circularholesor. inayliex-s .tendthroughout asiiiallportion of thecircurnterence ofthevalve tube so as to maintainregistration with the inner ends of the tubes during a cons derableportion of a revolution.

Preferablythese'ports each subtend an arc V aboutlQOF. The outer endofthevallvef tube 2 6 is threaded to a pipe28 wl ich passes throughastufiing box indicated. generally at and securedby bolts 30 ,to-thefflange 20. The pipe 28'is secured to a stationary pipe 31,

leading to any suitable-place where the water, condensation may beej'ected. The jnnerend of thesleeve' 22 is clos'e'dhy'means ota plate 32so as-lto preserve'ja fluid-tight joint at both.

ends between thesleevel and the valve tube; vj j} 'lii the operationofthe steam drum it'willf i v be observed'thatt-he drum, the shaft -14,the sleeve 22, and-the pipes 25 rotate. simultane .ously. Since thepipes rotate with the drun l they wil'lnotbe interfered with byany;in-:.'

The valve tube 26, however, remains stationary due to its connectionwith the pipe 31.. As e the pipes 25 rotate toward their. downwardlygland 19 receiving a flange 20 at the end ofa j i i cessivelyintoregistration with the several ports 27 in the valve tube. As eachpointing position their inner ends" come su'c registers with its port,connectionis'iiormed;- between the interior of the drum and the pipe tomof the-"drun'i it ,w'illlie below. the leve'l V of the watercondensationand the latter will innersurface ofthe drum and their-inner j be blownoutthrough the; pipe and thevalve tube by the pressure of the steamwithin the drum. Connection between the pipes 25 and the valve tubelasts only duringthe period when each "tubepoints downwardly and,therefore, there is no waste due tothe steam exhausting directly intothe waste pipe 31.

It will be seen. from the foregoing description that I have provided astructure which is s mple and inexpensive to make and assemble,

and which leaves the exterior of the drum with a neat and simpleappearance.

What I claim s 1. In a device of the class described, a drum, means forsupportingthe drum a rotation, a stationary cylindrical (hollow .7 valvemember extending within the drum along the axis thereof, a cylindricalsleeve 20 coaxial with the valveome mberrand closely surrounding-thesame so as to extend also within the drum, sald sleeve being rotatable.onf'thevalve member with the drum, and a I plurality of pipes spacedcircumferent allyaround: the sleeve, secured thereto, and extendingradially voutwardly therefrom with their outer open ends spacedslightly'from the ends communicating with the interior 'of the drum,means for supporting the drum for ro- "sleeve, the valve member beingradially'portedto permit the pipes to communicate suc cessively with theinterior of the valve mein ber they come into downwardly pointingposition. 7 2. In a device of the class descr bed, a

tation, afstationary cylindrical hollow valve I. member extending withinthe drum along the axis thereof and having a plurality of aligneddownwardlyopening ports spaced from eachv other'in tl e' direct-ion ofthe axis of'th'e valve member, a cylindrical sleeve coaxial with the-alve member and closely surrounding the s:- p i said sleev'eheuigrotatable'on the valve mem;

ne so as to extend also-within-thedrum,

her with the drunnand a plurality of pipes botlr;spacedecircumferentially around the sleeve and spaced axially along itatintervals j corl'espondlng with the axia'l'spaci'ng of the ports inthevalve member,said pipesfbeing secured to thesleeve' and extending radally outwardly therefrom wlth their outer open ends spaced slightlyfromithe inner surface wardlypointing position.

7 signature,

of the drumand their inner ends communicating with the interior of thesleeve, whereby the pipes register successively w1ththe1r repipes comeinto downwardly pointing-iposition. I l V 3. In a deviceof the. classdescribed, a

supporting the shaft for rotation, a cylindrieal sleeve extendingaxially 'within the recess of the shaft to a point within the drum,

a plurality of pipes spacedcircumferentialiy about the sleeve, ecuredthereto, and extend ing radially therefrom through the shaft with their,outer open ends spaced slightly from the inner surface .of the drumandtheir inner ends communicating"with the interior of the sleeve, and astationary cylindrical 'spective ports in the valve member 'asr-the I60, drum, an axiallyrecessed shaft supporting the drum'and'rotatabletherewith,-means for valve member fitted fluid-tight within the sleeveand extending axially into it toa point within the drum, thevalve'member -being' radially ported to, permit thepipes to communicatesuccessively with the interior of the valve member as they come into'down it. In a device ofthe' class "described, a drum, an axiallyrecessed shaft supporting the drum and rotatable therewith, mean'sforsupporting theshaft for rotation, a cylindricalsleeve'extendingaxiallywithinthe recess of the shaft tofa point'wi'thin the drum, a pluralityof pipes-spaced both circumferentially around the sleeve andfaxiallyalong it,

secured thereto, and extending radially therefrom through the shaftwitlrtheir outer open 7 ends spaced slightlyfroi'n the-innersurface ofthe drum and their inner ends communicating with the interior ofthefsleev and asta tionary cylindrical valve member fitte'clfiuid l.tlghtwithin the sleeve and extendingaxially iutoit'to a point withinthe drum, the valve"- member having afseriesflof al-igi ied down.

wardly opening'portsspa'ced from each other in the direction oftlieaxisof'the valve nie nfiber at intervals corresponding to the "axialf spacing of the pipes carried by the sleeve,

wherehy the pipes registersuccessivelywvith their respective ports asthe pipes come into downwardly pointing position.- 3 I In testimonywhereofI have afiixed my HARRY ammonia-

